Through the lens: Civil war in Syria

Syrian rebel fighter, Wisam Al-Saleh, 21, poses for a picture, after returning back from fighting against Syrian army forces in Aleppo, at a rebel headquarters in Marea on the outskirts of Aleppo city, Syria, Sunday, Aug. 26, 2012. In their previous lives, they were butchers, barbers, construction workers and university students. Now they are rebels fighting a civil war they hope will end the regime of Syrian President Bashar Assad.

Muhammed Muheisen/ASSOCIATED PRESS

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Syrian rebel fighter, Wisam Al-Saleh, 21, poses for a picture, after returning back from fighting against Syrian army forces in Aleppo, at a rebel headquarters in Marea on the outskirts of Aleppo city, Syria, Sunday, Aug. 26, 2012. In their previous lives, they were butchers, barbers, construction workers and university students. Now they are rebels fighting a civil war they hope will end the regime of Syrian President Bashar Assad.